YITP WORKSHOP ON
Quasi-Periodic Oscillations and Time Variabilities of Accretion Flows
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ABSTRACT

NAME
INSTITUTE
TITLE OF THE TALK
M. Bursa
Astronomical Institute of the Czech Academy of Science, Czech Republic
Modulation mechanisms of high-frequency QPOs
Two fundamental questions that need to be answered in the context of any QPO theory are: how QPOs are excited, and how flux is modulated. I will address the second issue and will discuss possible modulation mechanisms for both neutron-star and black-hole type of HFQPOs that may be responsible for the actual outgoing flux modulation.@


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